> Markdown version of [/jobs/ext/1748162-principal-systems-administrator](https://www.wearedevelopers.com/jobs/ext/1748162-principal-systems-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Systems Administrator - **Company:** RTX - **Location:** Tucson, AZ, United States - **Salary:** $86,800.0 - $165,200.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Microsoft Azure, CompTIA Security+, Continuous Delivery, Continuous Integration, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), VMware ESX Servers, System Center Configuration Manager, Windows Servers, OpenShift, Red Hat Enterprise Linux, VMware VSphere, Data Storage Technologies, High Performance Computing, Gitlab, Virtual Computing, Containerization, Tanzu, Kubernetes, Rancher, Vcenter, National Industrial Security Program Operating Manual (NISPOM), Wsus, Docker, Jenkins, Vmware - **Published:** July 8, 2026 - **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-AZ-TUCSON-928--1151-E-Hermans-Rd--MULTI-PURPOSE-FAC-928/Principal-Systems-Administrator_01857009 ## About the Role Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance, * Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment. * Experience with Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server replication methods. * Working as a team member in a fast-paced technological environment. Use troubleshooting techniques to resolve technical problems of a moderate to high scope and complexity to include the integration of hardware and operating systems (OS). * Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date. * Full time 100% Onsite position. Qualifications You Must Have: * Typically requires a University degree or equivalent experience and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience. * Active and transferable U.S. government issued Top Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. * Experience with Windows and/or Linux. Qualifications We Prefer: * Experience with Containerization Technologies such as OpenShift, Kubernetes, Docker, Tanzu, and Rancher. * Experience with Continuous Integration\Continuous Delivery Tools such as Gitlab, Jenkins, and Azure DevOps. * Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification). * Experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF, data storage, NAS, and SAN technologies and solutions. * Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods. * Experience with Microsoft WSUS, MECM, and/or Exchange. * High Performance Computing (HPC) experience in a Linux environment. ## Related Videos - [The Private AI Platform: Why Agentic Apps Need a Private Application Platform](https://www.wearedevelopers.com/videos/100162-the-private-ai-platform-why-agentic-apps-need-a-private-application-platform) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Discover the open source trio you didn’t expect: .NET and PostgreSQL on Linux](https://www.wearedevelopers.com/videos/2042-discover-the-open-source-trio-you-didn-t-expect-net-and-postgresql-on-linux) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)